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levacccp [35]
3 years ago
14

What are two ways variation in the trait could be introduced into the population?

Biology
1 answer:
Cerrena [4.2K]3 years ago
3 0

A single mutation can have a large effect, but in many cases, evolutionary change is based on the accumulation of many mutations. I hope this help you

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Explain how the independent alignment of homologs, and also crossing-over during the first meiotic division, each contribute to
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Answer: Homologous chromosomes are randomly distributed to daughter cells, this means different chromosomes segregate independently of each other. And they exchange segments of DNA during crossing over. This recombination creates genetic diversity because genes from each parent are exchanged.

Explanation:

Meiosis is a type of cell division that produces gamete cells, which are sex cells (egg and sperm)

Chromosomes that form a pair and are found together are called homologous chromosomes, and they are inherited from each parent. During prophase of meiosis I, the homologous chromosomes exchange segments of DNA in a process called crossing over. This recombination creates genetic diversity because genes from each parent are exchanged. <u>It results in new combinations of genes on each chromosome.</u>

After that, during the anaphase of meiosis I, the two chromosomes line up on the equatorial plane of the cell. Then, they are separated and each will go to a new daughter cell. So homologous chromosomes are randomly distributed to daughter cells, <u>this means different chromosomes segregate independently of each other.</u>

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When atoms in a covalent bond share electrons unequally (one atoms pulls more than the other), the bond is said to be __________
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When atoms in a covalent bond share electrons unequally (one atoms pulls more than the other), the bond is said to be a polar bond is formed when electrons are unequally shared between two atoms. Polar covalent bonding occurs because one atom has a stronger affinity for electrons than the other (yet not enough to pull the electrons away completely and form an ion).
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Hope you are having

Explanation:

a good day

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GIVING BRAINLIEST!
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How much of a cell���s mass is water? <br> a. 25% <br> b. 50% <br> c. 75% <br> d. 90%?
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